公开(公告)号：US20060222389A1

公开(公告)日：2006-10-05

申请号：US11377227

申请日：2006-03-15

申请人： Hidenori Kin ,  Keiichi Taguchi ,  Hidetsugu Shimura ,  Shinsuke Yokote

发明人： Hidenori Kin ,  Keiichi Taguchi ,  Hidetsugu Shimura ,  Shinsuke Yokote

IPC分类号： G03G15/00

CPC分类号： G03G15/5058 ,  G03G15/0121 ,  G03G15/0131 ,  G03G15/0173 ,  G03G2215/00059 ,  G03G2215/00063 ,  G03G2215/0161 ,  G03G2215/0177

摘要： An image forming apparatus for forming an image corresponding to an image signal on a recording material, comprising: a signal processor which generates an image-formation control signal by subjecting the image signal to a signal processing process including a screening process selectively using one of plural types of different processing screens; an image forming unit which includes an intermediate transfer medium, and which forms the image by forming a toner image on the intermediate transfer medium corresponding to the image-formation control signal and transferring and fixing the toner image to a recording material; and a detector which detects a quantity of the toner carried on the intermediate transfer medium as the toner image, wherein the signal processing process performed by the signal processor includes a tone correction process for compensating for a gamma characteristics of the apparatus based on a detection result given by the detector detecting a toner image formed as a patch image by using the processing screen and a transferring/fixing characteristics, which represents a relation between a quantity of toner constituting a toner image carried on the intermediate transfer medium and a density of an image formed on the recording material as a result of transferring and fixing the toner image to the recording material, previously determined in correspondence to the processing screen.

公开(公告)号：US20060216050A1

公开(公告)日：2006-09-28

申请号：US11377616

申请日：2006-03-15

申请人： Keiichi Taguchi

发明人： Keiichi Taguchi

IPC分类号： G03G15/08

CPC分类号： G03G15/5004 ,  G03G15/0121 ,  G03G15/0173

摘要： An image forming apparatus which includes: a plurality of developers each of which stores therein a toner of the same color and includes a toner carrier structured to rotate while carrying the toner on its surface; and a controller which executes an image forming operation using the developer in accordance with an image forming command, wherein the controller selects a developer from the plurality of developers based on a length of shutdown time from the end of use in the previous image forming operation and executes the image forming operation using the selected developer.

公开(公告)号：US20060120771A1

公开(公告)日：2006-06-08

申请号：US11266003

申请日：2005-11-02

申请人： Nobuyuki Mizushima ,  Kuniaki Tanaka ,  Keiichi Taguchi

发明人： Nobuyuki Mizushima ,  Kuniaki Tanaka ,  Keiichi Taguchi

IPC分类号： G03G15/01

CPC分类号： G03G15/161 ,  G03G15/0131 ,  G03G2215/0154 ,  G03G2215/0177

摘要： An image carrier is adapted to support a toner image thereon. A circulating intermediate transfer member is brought into contact with the image carrier to form a primary transfer position at which the toner image is transferred onto the intermediate transfer member. A secondary transfer member is brought into contact with the intermediate transfer member to form a secondary transfer position at which the toner image on the intermediate transfer member is transferred onto a recording medium passing therebetween. A gate roller pair is adapted to nip the recording medium therebetween at a nipping position and to convey the nipped recording medium toward the secondary transfer position. A cleaning blade is retractably brought into contact with the intermediate transfer roller to scrape off toner remaining on the intermediate transfer roller. A conveyance speed of the recording medium at the nipping position is faster than that at the secondary transfer position. The cleaning blade is retracted from the intermediate transfer member until when a trailing end of the recording medium passes through the nipping position, in a case where the recording medium has a stiffness greater than a prescribed level.

摘要翻译： 图像载体适于在其上支撑调色剂图像。 使循环的中间转印部件与图像载体接触以形成调色剂图像转印到中间转印部件上的一次转印位置。 二次转印部件与中间转印部件接触以形成二次转印位置，在该二次转印位置，中间转印部件上的调色剂图像转印到通过它们的记录介质上。 门辊对适于在夹持位置夹持其间的记录介质并将夹持的记录介质传送到二次转印位置。 清洁刀片可伸缩地与中间转印辊接触以刮除残留在中间转印辊上的调色剂。 记录介质在夹持位置的输送速度比二次转印位置的传送速度快。 在记录介质具有大于预定水平的刚度的情况下，清洁刮板从中间转印部件缩回直到记录介质的后端通过夹持位置。

公开(公告)号：US20050220460A1

公开(公告)日：2005-10-06

申请号：US11069751

申请日：2005-02-28

申请人： Keiichi Taguchi ,  Ken Yoshizuka ,  Osamu Ishibashi

发明人： Keiichi Taguchi ,  Ken Yoshizuka ,  Osamu Ishibashi

IPC分类号： G03G15/01 ,  G03G15/00 ,  G03G15/08

CPC分类号： G03G15/01 ,  G03G2215/0177

摘要： Prior to execution of a printing operation, a print preparatory operation is conducted collectively on all developer cartridges mounted to a developing unit, thereby bringing all the developer cartridges into a printable state. Therefore, even if a residual amount of toner in the cartridge runs too low to continue the printing operation performed using one of plural cartridges mounted to the developing unit, the printing operation is allowed to continue by switching the cartridge to the next cartridge. Hence, a large volume of monochromatic prints may be produced in an efficient manner.

摘要翻译： 在执行打印操作之前，在安装到显影单元上的所有显影盒上集中地执行打印准备操作，从而使所有的显影盒都处于可打印状态。 因此，即使墨盒中的剩余墨粉量太低而不能继续使用安装到显影单元的多个墨盒中的一个进行打印操作，通过将墨盒切换到下一个墨盒，允许打印操作继续。 因此，可以以有效的方式产生大量的单色印刷品。

公开(公告)号：US20050008405A1

公开(公告)日：2005-01-13

申请号：US10862064

申请日：2004-06-04

申请人： Keiichi Taguchi

发明人： Keiichi Taguchi

IPC分类号： G03G15/01

CPC分类号： G03G15/0131 ,  G03G2215/0177

摘要： In an image forming apparatus capable of selectively carrying out a color print mode or a monochromatic print mode, the individual print modes are carried out as follows. In the color print mode, images are arranged on an intermediate transfer belt 71 with a first spacing d1(a) suited for the color print mode, the first spacing shorter than a second spacing d2(a). Hence, the second spacing d2(a) may be increased by the amount that the first spacing d1(a) is decreased, so that a sufficient time for the changeover of developers 4Y, 4M, 4C, 4K may be afforded. In the monochromatic print mode, on the other hand, adjustment is made to equate the first spacing d1(a) to the second spacing d2(a). This obviates a narrowed sheet spacing.

摘要翻译： 在能够选择性地执行彩色打印模式或单色打印模式的图像形成装置中，各个打印模式如下进行。 在彩色打印模式中，图像被布置在具有适合彩色打印模式的第一间隔d1（a）的中间转印带71上，第一间距小于第二间距d2（a）。 因此，第二间隔d2（a）可以增加第一间隔d1（a）减小的量，从而可以提供用于切换显影剂4Y，4M，4C，4K的足够的时间。 另一方面，在单色打印模式中，进行调整以使第一间隔d1（a）与第二间距d2（a）相等。 这样可以避免纸张间距变窄。

公开(公告)号：US20050008382A1

公开(公告)日：2005-01-13

申请号：US10913456

申请日：2004-08-09

申请人： Keiichi Taguchi ,  Toshihiko Yamazaki

发明人： Keiichi Taguchi ,  Toshihiko Yamazaki

IPC分类号： G03G15/16 ,  G03G15/01

CPC分类号： G03G15/162 ,  G03G2215/0119 ,  G03G2215/0177

摘要： An intermediate transfer belt comprises a plurality of layers including a conductive layer, and has a transfer area and a transfer protection area. A CPU 111 sends a control signal to a primary transfer bias generating circuit 116, and applies a primary transfer bias upon the conductive layer of the intermediate transfer medium through a bias applying member 31A. The CPU 111 changes an output value of the primary transfer bias in accordance with a predetermined bias change condition when secondary transfer is not ongoing and when a non-image area, in which there is no toner image transferred on the intermediate transfer belt, such as the transfer protection area is passing the primary transfer part.

摘要翻译： 中间转印带包括包括导电层的多个层，并且具有转印区域和转印保护区域。 CPU 111向一次转印偏压发生电路116发送控制信号，并通过偏置施加部件31A向中间转印介质的导电层施加一次转印偏压。 当二次转印不进行时，CPU 111根据预定的偏压变化条件改变一次转印偏压的输出值，当在中间转印带上没有调色剂图像转印的非图像区域 转印保护区通过一次转印部分。

公开(公告)号：US06633737B1

公开(公告)日：2003-10-14

申请号：US09868892

申请日：2001-07-05

申请人： Kuniaki Tanaka ,  Nozomu Inoue ,  Yoshio Nakazawa ,  Tsuyoshi Kowari ,  Keiichi Taguchi

发明人： Kuniaki Tanaka ,  Nozomu Inoue ,  Yoshio Nakazawa ,  Tsuyoshi Kowari ,  Keiichi Taguchi

IPC分类号： G03G1516

CPC分类号： G03G15/161 ,  G03G15/0121 ,  G03G15/0173 ,  G03G15/0178 ,  G03G15/1615 ,  G03G2215/0158 ,  G03G2215/0177 ,  G03G2215/1657

摘要： Power transmission members which transmit rotational drive force from a drive source such as a motor, to an intermediate transfer drum is elastically deformed due to a load change which is generated as a cleaning part contacts and moves away from the intermediate transfer drum. Registration control amounts (Ra, Rb and Rc) attributed to the elastic deformation are obtained in advance. Transfer start positions for toner images in at least one or more toner colors out of four toner colors are corrected based on the registration control amounts (Ra, Rb and Rc), whereby registration deviations are suppressed to minimum and a high-quality color image is obtained.

摘要翻译： 将来自诸如马达的驱动源的旋转驱动力传递到中间转印鼓的动力传递构件由于随着清洁部件接触并远离中间转印鼓而产生的负载变化而弹性变形。 预先获得归因于弹性变形的配准控制量（Ra，Rb和Rc）。 基于配准控制量（Ra，Rb和Rc），以四种调色剂颜色中的至少一种或多种调色剂颜色转印墨粉图像的开始位置，由此将配准偏差抑制到最小，并且高质量彩色图像为 获得。

公开(公告)号：US07597316B2

公开(公告)日：2009-10-06

申请号：US11957265

申请日：2007-12-14

申请人： Akinobu Nakahata ,  Keiichi Taguchi ,  Tomoyuki Shiiya

发明人： Akinobu Nakahata ,  Keiichi Taguchi ,  Tomoyuki Shiiya

IPC分类号： B65H1/18

CPC分类号： B65H3/5261 ,  B65H1/14 ,  B65H3/0669 ,  B65H2405/11162 ,  B65H2511/13 ,  B65H2511/21 ,  B65H2511/514 ,  B65H2513/512 ,  B65H2513/514 ,  B65H2601/521 ,  B65H2701/1311 ,  B65H2701/1768 ,  B65H2220/01 ,  B65H2220/02 ,  B65H2220/11

摘要： An image-forming apparatus has a limitation pad 31c and a retard roller 34, which separately feed recording paper P on an elevation tray 31 in an MPT cover 30 by bringing the recording paper P against an outer peripheral surface 33a of the feeding roller 33. In this image-forming apparatus (paper feeder), when the feeding roller is stopped by passing recording paper to be separately fed to a pair of relay transport rollers, the elevation tray is lowered before stoppage of the feeding roller, thereby separating an extremity of the recording paper from the outer peripheral surface of the feeding roller.

摘要翻译： 图像形成装置具有限制垫31c和延迟辊34，其通过使记录纸P抵靠进给辊33的外周表面33a将记录纸P分开地供给到MPT盖30中的升降托盘31上。 在该图像形成装置（供纸装置）中，当通过将记录纸通过单独供给到一对继电器输送辊来停止进给辊时，在进给辊停止之前升降托盘降低，从而将进给辊的末端 来自进料辊的外周表面的记录纸。

公开(公告)号：US20080292357A1

公开(公告)日：2008-11-27

申请号：US10571517

申请日：2005-03-08

申请人： Keiichi Taguchi ,  Ken Yoshizuka ,  Ken Ikuma

发明人： Keiichi Taguchi ,  Ken Yoshizuka ,  Ken Ikuma

IPC分类号： G03G15/04

CPC分类号： G03G15/0121 ,  G03G2215/0177 ,  G03G2221/1815

摘要： An image forming system, etc., which provides a user or the like with great convenience is achieved. For example, an image forming apparatus is usable as a color image forming apparatus for forming color images and is usable as a monochrome image forming apparatus for forming monochrome images, and by moving one developing unit among attached developing units to an attach/detach position, a developing unit becomes replaceable. A timing for moving the predetermined developing unit to the attach/detach position when an event occurs in which development cannot be performed with the predetermined developing unit is different for when the image forming apparatus is being used as a color image forming apparatus and for when the image forming apparatus is being used as a monochrome image forming apparatus. See FIG. 12, for example.

摘要翻译： 实现了以非常方便的方式提供用户等的图像形成系统等。 例如，图像形成装置可用作形成彩色图像的彩色图像形成装置，并且可用作用于形成单色图像的单色图像形成装置，并且通过将附着的显影单元中的一个显影单元移动到附着/分离位置， 显影单元变得可替换。 当图像形成装置被用作彩色图像形成装置时，当发生不能用预定显影单元进行显影的事件发生的事件时，将预定显影单元移动到附接/分离位置的定时是不同的， 图像形成装置被用作单色图像形成装置。 参见图。 12，例如。

公开(公告)号：US07379679B2

公开(公告)日：2008-05-27

申请号：US11152845

申请日：2005-06-13

申请人： Keiichi Taguchi ,  Yoichi Yamada

发明人： Keiichi Taguchi ,  Yoichi Yamada

IPC分类号： G03G15/08

CPC分类号： G03G15/0121 ,  G03G15/01 ,  G03G15/08 ,  G03G15/0848 ,  G03G2215/00042 ,  G03G2215/0177 ,  G03G2215/0888

摘要： In a case where there are developers belonging to Life Rank 1 representing a service life substantially as long as that of a fresh developer (Step S501), and the developers includes one which is ready to print (Step S502), it is determined that image formation can be performed without performing a preparatory operation (Step S506). In a case where there is no print-ready developer but a developer which requires an agitation operation of rotating a developing roller by a predetermined quantity (Step S503), the agitation operation is performed on the developer (Step S504) so as to make the developer in a print-ready state. In a case where the developer cannot be made print-ready by the agitation operation, a density control operation for adjusting operating conditions of an apparatus is performed (Step S505). Thus is obviated an unnecessary operation. The developer subjected to a predetermined print preparatory process is used in a printing operation so that an image of good quality may be formed. In a case where no Rank-1 developer is available but a Rank-2 developer, deteriorated to a degree, is available, the same procedure is taken.

摘要翻译： 在属于生命等级1的开发者属于与新鲜开发者相当的使用寿命的情况下（步骤S 501），并且开发者包括准备打印的开发者（步骤S 502），所以确定 可以在不进行准备操作的情况下执行图像形成（步骤S 506）。 在没有印刷准备好的显影剂而需要将显影辊旋转预定量的搅拌操作的显影剂的情况下（步骤S 503），对显影剂进行搅拌操作（步骤504），以便 使开发者处于打印状态。 在通过搅拌操作不能使显影剂成为打印准备的情况下，执行用于调节装置的操作条件的浓度控制操作（步骤S 505）。 因此避免了不必要的操作。 在打印操作中使用经过预定打印准备处理的显影剂，从而可以形成质量好的图像。 在没有Rank-1开发者可用但Rank-2开发者恶化到一定程度的情况下，采用相同的过程。